Rock and coal drilling machine



J. ROSS. Rook and Coal Drilling Machine.

No. 234,147. Patented Nov. 9,1880.

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UNITED STATES PATENT OFFICE.

JOHN ROSS, OF PLAINS, PENNSYLVANIA.

ROCK AND COAL DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 234,147, dated November 9, 1880.

Application filed August 26, 1879.

To all whom it may concern:

Be it known that I, JOHN Ross, of Plains, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Rock and Goal Drilling Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to an improved rock and coal drilling machine, intended for hand labor, but which may be readily used in connection with steam-power.

The invention possesses the greatest possible range of adjustment, so that it can be used to drill in any direction by several modes of adjustment and fastenings.

The device consists of a head-block, through which is formed a horizontal opening in which is fixed one end of a hollow sleeve or shaft, and also has two vertical D'lOItiSGS in its ends, in which slide the arms ofa vertical frame held by set-screws.

It consists, further, in an adjustable shaft or bar, one end of which is placed in the hollow sleeve, while the other or outer end is crooked and provided with claws which enters the hole drilled in the coal and holds the drill firmly in place; and it consists, further, in other mechanism which will be hereinafter fully set forth.

In the drawings, Figure 1 is an end elevation, and Fig. 2 a side elevation, of a drill constructed according to my invention. Fig. 3 is a cross-section through the head-block and adjustable frame; and Fig. 4 is a vertical longitudinal section of the device.

a is the head block, which has formed through it the longitudinal hole a, in which is fixed the end of the sleeve 1). It has also formed through it, near its ends, the vertical openings or mortises a? a, which receive the ends of the arms 0 c of the vertically-adjustable frame c, which is held at any desired point by the set-screws c c passing through the ends of' said head-block, as shown. To the center of the top cross-bar, c of the adjustable frame c, I fix the swivel d, which is provided with open slots 61, which serve as bearings for the pins 6 e on the swivel-nut e. The swivel d and the swivel-nut e, constructed and arranged as described, make a universal swivel capable of any desired adjustment, and which, by having the bearingpins of the nut 0 held in the open bearings 01, enables me to lift the drill-shaft from the frame and turn it end for end. This is often necessary when the sides of the bank or opening in the rock would prevent the reversal of said shaft by turning it on the swivel d.

f is the drill-shaft, which is held in the swivel-nut e, and its ends are so formed that they may be used either for the socket and bit ff or for the crank f.

The sleeve 1) has formed through it, near its outer end, a series of holes, 1), into which I insert a set nut, b and a retaining-pin, h The holes are formed through the sleeve from different sides, for purposes hereinafter explained.

g is a shaft, one end of which is provided with a series of holes, 9, and is inserted in the end of the sleeve 1), and is held by the screw 1) or by the retaining-pin N, or by both together. The outer end, 9 of the bar g is flattened and bent laterally, as shown, and is provided on its end with the lateral projections which enter the coal and hold the said bar securely in the hole drilled for its reception.

To adjust the drill a hole is first drilled in the bank of sufficient size to receive the end g of the shaft 9. The end 9 is then inserted, the outer end being held slightly off to one side, so as to bring the said end 9 in line with the drilled hole. After being inserted the shaft is drawn straight with said hole, and the purchase or leverage given by the shape of the end g forces the points g into the coal or rock and gives a firm hold without the necessity of wedges or other apparatus. The operation of the drill makes the points g take a firmer hold. The shaft g being thus fixed the sleeve b of the drill-frame is slipped onto the outer end of said shaft, and is fixed thereon by the pin 1) or by screw 1). It will be seen that the drillframe may be revolved on the end of the shaft g, so as to bring the drill-shaft and bit into any position above, or below, or on either side of,

i q s, raw-w" the said shaft without moving the end 9 from its hold in the bank. The head a with its at tached mechanism can also be moved nearer to or farther away from the point 1 as may be desired.

A further advantage I have is by setting the frame 0 with only one leg in a mortise in the head a, as shown in dotted lines. Fig. 1, for the purpose of avoiding seams and faults in the coal-veins, or where room is required to escape a projection not easily removed. Ordinarily, however, both legs are. placed in the mortises, as there is greater strength and durability secured thereby. When one leg is inserted great care must be exercised in the operation of the drill.

By means of this swivel d with its nut e, constructed and arranged as described, I am enabled todrill holes directly into the bank, or at almost any angle desired to the right or left, or upward or downward from the. swivel.

In Figs. 2 and 4 I have shown a different device for fixing the shaft g in the sleeve I). On the under side of the sleeve 1 form a solid projection, 71, through which is formed an opening which receives a wedge, It. The wedge is driven into the opening and presses against the under side of the shaft 9 and binds the latter rigidly in position.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a drilling-machine, the shaft g, having its end 9 crooked laterally and provided with the lateral projections or points g on its outer end, substantially as and for the purpose set forth.

2. The combination, with the drill-frame and the shaft 9 of the sleeve 1), having one end fixed in the drill-frame, while its other end slides onto the end of the shaft g, where it is held by suitable retaining mechanism, substantially as and for the purposes set forth.

3. The frame c, provided at its top with a mechanism for holding and controlling a drillshaft, and so arranged with a head-block, a, as to move and fit said mechanism at either side of a perpeudicularline drawn through the center of said head-block, substantially as and for the purposes set forth.

4. The frame 0, adjustable to and from the head a on the shaft g, and held in the required position by set-screws c, substantially as and for the purposes set forth.

5. The universal swivel d, with the swivelnut 0, supported on the frame 0, as and for the purposes set forth.

6. The combination of the shaft 9, adjnsta ble frame 0, with swivel d, swivel-nut c, and reversible drill-shaft f, substantially as and for the purposes set forth.

In testimony that I claim the foregoing as my own I afiix my signature in presence of two witnesses.

JOHN ROSS. Witnesses JOHN D. BIRMINGHAM, RUFUS J. BELL. 

